package org.itstack.demo.netty.server;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.socket.SocketChannel;

import java.text.SimpleDateFormat;
import java.util.Date;


public class MyServerHandler extends ChannelInboundHandlerAdapter {

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        ChannelHandler.channelGroup.add(ctx.channel());

        SocketChannel socketChannel = (SocketChannel) ctx.channel();
        System.out.println("链接报告开始");
        System.out.println("链接报告信息：有一个客户端链接到本地服务器");
        System.out.println("IP: " + socketChannel.localAddress().getHostString());
        System.out.println("Port:" + socketChannel.localAddress().getPort());
        System.out.println("链接报告完毕！");
        // 通知客户端链接建立成功
        String str = "通知客户端连接建立成功" + "" + new Date() + " " + socketChannel.localAddress().getHostString() + "\r\n";
        ctx.writeAndFlush(str);
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        System.out.println("客户端断开连接" + ctx.channel().localAddress());
        ChannelHandler.channelGroup.remove(ctx.channel());
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {

        System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) + "接收到消息：" + msg);
        String str = "服务端收到消息：" + new Date() + " " + msg + "\r\n";
        ChannelHandler.channelGroup.writeAndFlush(str);

    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        ctx.close();
        System.out.println("异常信息：" + cause.getMessage());
    }
}
